Study of distributed busbar protection based on a wireless sensor network

Since busbar protection is the cornerstone of smart grid stability, a wireless sensor network (WSN) of distribution busbar protection is presented, and architecture of the WSN and busbar protection principles are proposed in this paper. The fault detection, analysis and judgment of WSN protection owns a unique feature but still has common characteristics with traditional protection scheme. Based on the traveling-wave generated in power system, when a fault occurs, a novel time synchronization scheme is employed to improve the protection performance and accuracy. Simulation results indicate that the scheme can acquire synchronization time and reduce the possibility of mis-operation of WSN based protection.